18318520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 49766400

約数和(自身を除く): 31447880

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 31, 34, 40, 44, 55, 62, 68, 79, 85, 88, 110, 124, 136, 155, 158, 170, 187, 220, 248, 310, 316, 340, 341, 374, 395, 440, 527, 620, 632, 680, 682, 748, 790, 869, 935, 1054, 1240, 1343, 1364, 1496, 1580, 1705, 1738, 1870, 2108, 2449, 2635, 2686, 2728, 3160, 3410, 3476, 3740, 4216, 4345, 4898, 5270, 5372, 5797, 6715, 6820, 6952, 7480, 8690, 9796, 10540, 10744, 11594, 12245, 13430, 13640, 14773, 17380, 19592, 21080, 23188, 24490, 26860, 26939, 28985, 29546, 34760, 41633, 46376, 48980, 53720, 53878, 57970, 59092, 73865, 83266, 97960, 107756, 115940, 118184, 134695, 147730, 166532, 208165, 215512, 231880, 269390, 295460, 333064, 416330, 457963, 538780, 590920, 832660, 915926, 1077560, 1665320, 1831852, 2289815, 3663704, 4579630, 9159260, 18318520]

約数ペア:

[(1, 18318520), (2, 9159260), (4, 4579630), (5, 3663704), (8, 2289815), (10, 1831852), (11, 1665320), (17, 1077560), (20, 915926), (22, 832660), (31, 590920), (34, 538780), (40, 457963), (44, 416330), (55, 333064), (62, 295460), (68, 269390), (79, 231880), (85, 215512), (88, 208165), (110, 166532), (124, 147730), (136, 134695), (155, 118184), (158, 115940), (170, 107756), (187, 97960), (220, 83266), (248, 73865), (310, 59092), (316, 57970), (340, 53878), (341, 53720), (374, 48980), (395, 46376), (440, 41633), (527, 34760), (620, 29546), (632, 28985), (680, 26939), (682, 26860), (748, 24490), (790, 23188), (869, 21080), (935, 19592), (1054, 17380), (1240, 14773), (1343, 13640), (1364, 13430), (1496, 12245), (1580, 11594), (1705, 10744), (1738, 10540), (1870, 9796), (2108, 8690), (2449, 7480), (2635, 6952), (2686, 6820), (2728, 6715), (3160, 5797), (3410, 5372), (3476, 5270), (3740, 4898), (4216, 4345)]